The mBW process dominates the pair production from high-energy photons which propagate in ultraintense electromagnetic fields. An efficient mBW scheme is to initiate the QED cascade [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]}, [8]}, [9]}, [10]}, [11]}, [12]}, [13]} with a plasma seed to interact with two counterpropagating ultraintense lasers or multiple colliding lasers. Other schemes include the collisions between a laser and a leptonic beam [14]} or between two leptonic beams [15]}, [16]}. One practical setup for copious pair production in a laser facility is to use a single ultraintense laser to strike a solid target [17]}. This scheme is potentially feasible with the next-generation high-power laser facilities, e.g., ELI [18]} and EPAC [19]}. Previous studies show this scheme is capable of producing a dense (\(\gtrsim \)  the relativistically-corrected critical density) pair plasma cushion in front of the target [20]}, [21]}, [22]}, [23]}, [24]}, [25]}. This dense pair production will change the local plasma profile and also the plasma response to the laser coupling. Therefore, our study on the self-consistent scenario of pair production [Sec. ] is focused on this efficient scheme.
